A Retrospective Analysis of Oxygen Desaturation during Acoustic Respiratory Rate Monitoring in Non-ICU Patients following Tracheal Extubation after General Anesthesia
Table 1
Demographic and clinical Characteristics for patients with desaturation and nondesaturation.
Variables
Desaturation
Nondesaturation ()
value
Age (year)
63.3 (15.6)
62.5 (14.7)
0.607
Gender (M/F)
55/47
466/367
0.698
Height (cm)
160.4 (9.9)
160.7 (9.4)
0.778
Weight (kg)
58.3 (11.7)
59.0 (12.1)
0.588
Body mass index (kg m−2)
22.6 (3.5)
22.8 (3.7)
0.632
% VC (%)
101.0 (19.0)
104.9 (18.3)
0.045
FEV1.0 (%)
74.8 (11.1)
77.9 (11.5)
0.010
Pulmonary dysfunction (Y/N)
117/242
175/401
0.478
ASA physical status (I/II/III)
13/79/10
146/631/56
0.290
Hypertension (Y/N)
47/55
347/486
0.393
Ischemic heart disease (Y/N)
7/95
36/797
0.248
CHF (Y/N)
0/102
6/827
0.390
HD (Y/N)
3/99
18/815
0.616
Asthma (Y/N)
3/99
27/806
0.871
COPD (Y/N)
16/86
54/779
0.001
DM (Y/N)
18/84
151/682
0.905
Duration of surgery (min)
276 (153)
244 (131)
0.027
Duration of anesthesia (min)
347 (162)
314 (138)
0.026
Surgical site
Head and neck
26
257
0.208
Upper abdominal
12
109
Lower abdominal
42
247
Laparoscopy
18
171
Other
4
49
Transfusion (Y/N)
24/78
118/715
0.013
Total fluid balance (mL)
1785 (1118 to 2866)
1620 (978 to 2333)
0.021
Anesthetics
Inhalational
25
626
0.940
Intravenous
77
207
Rocuronium (mg)
95 (66 to 110)
90 (50 to 120)
0.612
Remifentanil (μg)
1548 (731 to 2594)
1457 (652 to 2694)
0.440
Fentanyl (μg)
300 (200 to 500)
300 (200 to 450)
0.976
PCA (Y/N)
70/32
523/310
0.248
Basal fentanyl dose by PCA (μg/hr)
14.0 (0–55)
14.0 (0–45)
0.437
Critical RRa change (Y/N)
26/76
333/500
0.005
Mean perfusion index
2.09 (2.21)
2.51 (1.75)
0.028
Variables are expressed as mean (SD), median (IQR), or number. FEV1%: forced expiratory volume 1.0 (sec) %, % VC: % vital capacity, pulmonary dysfunction: a case that had FEV1% < 70 or % VC < 80, ASA: American Society of Anesthesiologists, CHF: history of congestive heart failure, HD: on hemodialysis, COPD: chronic obstructive pulmonary disease, DM: diabetes mellitus, and surgical site: “upper abdominal” means supraumbilical procedures, “lower abdominal” means infra-abdominal procedures, and “laparoscopy” means any laparoscopic procedures. Rocuronium, remifentanil, and fentanyl: total doses of these drugs used intraoperatively, PCA: patient controlled analgesia, basal fentanyl dose by PCA: basal dose of fentanyl continuous administration delivered by a PCA device, and RRa: acoustic respiratory rate.
